Ref T171, made remote aircraft provider and web service "protected slots" -> "protected"

* Unlike in other cases, the remote aircraft provider slots are also very frequently called. So besides "style", it might be also useful here to avoid the extra MOC layers.
* Also renamed 2 web service signals and made web service connections Qt::QueuedConnection

src/plugins/simulator/fscommon/simulatorfscommon.h

@@ -48,10 +48,6 @@ namespace BlackSimPlugin
             virtual bool changeRemoteAircraftEnabled(const BlackMisc::Simulation::CSimulatedAircraft &aircraft) override;
             // ---------------------- ISimulator ------------------
 
-        protected slots:
-            //! \copydoc BlackCore::CSimulatorCommon::ps_allSwiftDataRead
-            virtual void ps_airportsRead() override;
-
         protected:
             //! Constructor
             CSimulatorFsCommon(const BlackMisc::Simulation::CSimulatorPluginInfo &info,
@@ -63,6 +59,11 @@ namespace BlackSimPlugin
             //! Init the internal objects
             virtual void initSimulatorInternals();
 
+            //! \name When swift DB data are read
+            //! @{
+            virtual void onSwiftDbAirportsRead() override;
+            //! @}
+
             //! \addtogroup swiftdotcommands
             //! @{
             //! <pre>